用户手册/
User's Manual
第
10
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25
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Both sides of the CAN bus communication must ensure that the corresponding GND is connected
or that the controller and the extension module use the same power supply. When the emc32z16z
controller and the extension module are powered by a different power source: the Controller
Power Supply, the EGND, is connected to the extension module power GND , otherwise it may burn
out the CAN. (for wiring, see the extension module in Chapter 3.)
针脚号
Stitch number
名称
Name
说明
Account for
1
485B
485-
2
485A
485+
3
EGND
外部电源地
External power source
4
CANL
CAN 差分数据-
Can differential data -
5
CANH
CAN 差分数据+
CAN difference data
2.2.3 RS232 接口 /RS232 interface
RS232 接口。其 9pin 引脚定义如下：
RS232 interface. The 9pin pin is defined as follows:
针脚号
Stitch number
名称
Name
说明
Account for
2
RXD
接收数据引脚
Data receiving pin
3
TXD
发送数据引脚
Send Data Pin
5
EGND
电源地
Power source
9
E5V
电源 5V 输出，可用于对文本屏供电（500mA 以下）
Power Supply 5V output, can be used to power the text
screen (500mA below)
